Why is my GPU doing this? Please help!

[Tribetter]

Here is my build.
AMD FX 8320 OC at 4.1Ghz (8 Core)
Asus R9 270
M5A78L-MLX V2

I had windows 7 before and has this issue for over year. then went out and bought a GTX 970 and it still did the same gpu drop then back up again . so i returned it
now i install a fresh copy of windows 8.1 and the problem is still there.
so it is definitely hardware related.

when i run Gpu bench marking tests (unigen heaven) the usage is always 90+ but when it comes to games it drops like a bitch.

Here my GPU usage (medium settings)

Battlefield 4 : http://i60.tinypic.com/2s01f9j.png
Battlefield 3 : http://i61.tinypic.com/ar14n.png
Far cry 4 : http://i57.tinypic.com/2rgc210.png
Valley Benchmark (Extreme setting) : http://i62.tinypic.com/11gro78.png
(95% to 98% usage)


CPU usage

Far cry 4 : http://i60.tinypic.com/2n72txg.png
Valley Benchmark : http://i57.tinypic.com/nq98i.png

as you can see the benchmark runs fine and uses all of my gpu resources with out dropping up and down. but games cant do that?



Please help me find a solution.

 

[babernet_1]

Looks like your CPU is overheating and throttling down.

 

[Dustin James]

I had something similar where I had to adjust the fan curve up a little.

something to try.